Inventor · disambiguated record
Yasuhiro Nunogawa
Also filed as: NUNOGAWA YASUHIRO
26 granted patents·2 pending applications·668 citations·filing 1979–2010
97Inventor score
Files withHITACHI LTD14RENESAS TECH CORP6HITACHI TOBU SEMICONDUCTOR LTD5HITACHI ULSI SYS CO LTD1KOHJIRO IWAMICHI1
Top patents by PatentIndex Score
28 records- 0197US7193471B2High frequency power amplifier circuit and radio communication systemRENESAS TECH CORP·Filed 2006·Granted Mar 20, 2007·43 cites·4 claims
- 0295US7123095B2High frequency power amplifier circuit and radio communication systemRENESAS TECH CORP·Filed 2005·Granted Oct 17, 2006·25 cites·11 claims
- 0394US6172567B1Radio communication apparatus and radio frequency power amplifierHITACHI LTD·Filed 1999·Granted Jan 9, 2001·85 cites·38 claims
- 0493US6483398B2Directional coupler, high frequency circuit module and wireless communication systemHITACHI LTD·Filed 2001·Granted Nov 19, 2002·77 cites·16 claims
- 0590US6433639B1High frequency power amplifier module and wireless communication systemHITACHI LTD·Filed 2000·Granted Aug 13, 2002·40 cites·10 claims
- 0689US7183856B2Power source circuit for high frequency power amplifying circuit and semiconductor integrated circuit for power source and electronics component for power sourceRENESAS TECH CORP·Filed 2004·Granted Feb 27, 2007·55 cites·6 claims
- 0789US6972640B2Directional coupler, high frequency circuit module and wireless communication systemHITACHI ULSI SYS CO LTD·Filed 2002·Granted Dec 6, 2005·50 cites·21 claims
- 0888US7145394B2High frequency power amplifier module, and wireless communication systemHITACHI TOBU SEMICONDUCTOR LTD·Filed 2005·Granted Dec 5, 2006·12 cites·2 claims
- 0988US6330165B1Semiconductor deviceHITACHI LTD·Filed 1999·Granted Dec 11, 2001·74 cites·25 claims
- 1080US6617927B2High frequency power amplifier module, and wireless communications systemHITACHI LTD·Filed 2002·Granted Sep 9, 2003·20 cites·12 claims
- 1177US7525813B2Semiconductor deviceRENESAS TECH CORP·Filed 2007·Granted Apr 28, 2009·6 cites·16 claims
- 1277US5293077APower switching circuitHITACHI LTD·Filed 1992·Granted Mar 8, 1994·48 cites·47 claims
- 1375US5142171AIntegrated circuit for high side driving of an inductive loadHITACHI LTD·Filed 1991·Granted Aug 25, 1992·28 cites·55 claims
- 1474US6489680B2Semiconductor deviceHITACHI LTD·Filed 2001·Granted Dec 3, 2002·15 cites·4 claims
- 1567US7053708B2Electronic component for high frequency power amplifier and radio communication systemRENESAS TECH CORP·Filed 2004·Granted May 30, 2006·15 cites·12 claims
- 1667US6384686B2Radio communication apparatus and radio frequency power amplifierHITACHI LTD·Filed 2001·Granted May 7, 2002·8 cites·26 claims
- 1767US6288612B1Radio communication apparatus and radio frequency power amplifierHITACHI LTD·Filed 2000·Granted Sep 11, 2001·8 cites·11 claims
- 1866US6897728B2High frequency power amplifier module and wireless communication systemHITACHI TOBU SEMICONDUCTOR LTD·Filed 2003·Granted May 24, 2005·9 cites·24 claims
- 1966US6774725B2Power supply system for a high frequency power amplifierRENESAS TECH CORP·Filed 2002·Granted Aug 10, 2004·15 cites·10 claims
- 2064US6463267B1High frequency power amplifying apparatus having amplifying stages with gain control signals of lower amplitudes applied to earlier preceding stagesHITACHI LTD·Filed 2000·Granted Oct 8, 2002·13 cites·8 claims
- 2164US4237487AMonolithic semiconductor integrated circuit for television receiversHITACHI LTD·Filed 1979·Granted Dec 2, 1980·14 cites·7 claims
- 2261US7068521B2Semiconductor deviceHITACHI TOBU SEMICONDUCTOR LTD·Filed 2005·Granted Jun 27, 2006·1 cites·10 claims
- 2355US6658243B2High frequency power amplifying apparatus having amplifying stages with gain control signals of lower amplitudes applied to earlier preceding stagesHITACHI LTD·Filed 2002·Granted Dec 2, 2003·7 cites·5 claims
- 2453US7817437B2Semiconductor deviceRENENSAS ELECTRONICS CORP·Filed 2009·Granted Oct 19, 2010·0 cites·7 claims
- 2550US2007001300A1Semiconductor deviceHITACHI TOBU SEMICONDUCTOR LTD·Filed 2006·Application pending·0 cites
- 2642US8295057B2Semiconductor deviceKOHJIRO IWAMICHI·Filed 2010·Granted Oct 23, 2012·0 cites·10 claims
- 2742US2003054780A1High frequency power amplifying circuit, and mobile communication apparatus using itHITACHI LTD·Filed 2002·Application pending·0 cites
- 2840US6943441B2Semiconductor deviceHITACHI TOBU SEMICONDUCTOR LTD·Filed 2002·Granted Sep 13, 2005·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →